JPS6244295Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a refrigerator with an improved cold air circulation structure in a storage compartment.

[Technical background of the invention and its problems]

FIG. 1 shows a conventionally used refrigerator called a direct cooling type. That is, the front opening of the storage room a is opened and closed by the door b, and the back plate d is erected with a gap on the front side of the cooler c arranged on the back side of the storage room a. . This back plate d is provided with ventilation holes e consisting of a large number of small holes.

Therefore, the cold air that has exchanged heat with the cooler c flows out from the vents e to the front side of the storage room a, and the cold air there once rises to the top and then passes through the cooler c.
It circulates using a natural convection method that exchanges heat with the water.

However, in this type of structure, there is a large temperature difference between the upper and lower parts of the storage chamber a, and there is a risk that the stored items, especially stored in the lower part, may freeze. Moreover, since the cooler c is usually located at the approximate center of the storage chamber a in the width direction, the temperature at both ends thereof is lower than that at the center. In this way, with direct cooling type,
The disadvantage is that the local temperature difference is large.

On the other hand, there is also a refrigerator called an intercooling type, which uses a blower in the storage room to forcefully circulate cold air and cool the refrigerator by convection heat conduction. This type of type requires a smaller temperature difference in the storage room than the above-mentioned direct cooling type.

However, in order to prevent an increase in power consumption, the above-mentioned blower is made as small as possible, and
The diameter of the fan's blades is very small compared to the volume of the storage chamber. Furthermore, since the blower is disposed approximately at the center of the back side of the storage chamber, the movement of cold air is particularly small at both ends of the storage chamber, and a temperature difference still occurs.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to minimize the temperature difference between the upper and lower parts of the storage chamber, and between the center and both sides of the storage chamber in forced circulation of cold air. Make it smaller
The objective is to provide a refrigerator that can improve cooling efficiency.

[Summary of the idea]

The present invention is equipped with a forced circulation air passage that sucks cold air from the lower portions of both sides of the storage chamber and exchanges heat with the cooler, and after the heat exchange, blows out from the upper portion of one side of the storage chamber in the width direction.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings. Fig. 2 shows a refrigerator, and 1 is the refrigerator main body.A storage chamber 1a that can be opened and closed with a dust cover and a control panel 1b are provided at the upper end of the refrigerator, and three door bodies 2a and 2b are provided at the approximately center stage of the front. , 2c are pivotally mounted. These door bodies 2a, 2b, and 2c are pivotally attached to a refrigeration unit 3, as shown in FIG. 3, and the refrigeration unit 3 is assembled into the refrigerator main body 1. The refrigeration unit 3 includes a storage 4 and a cooling room 5.
and a refrigerator section 6. The storage 4 and the cooling room 5 are arranged as shown in FIGS. 4 and 5. The storage 4 has a heat insulating material 4 on its circumferential surface.
a is attached, and the interior is partitioned in the width direction by a partition plate 7, one of which is a storage room 8 to be described later, and the other room is a room temperature room 9 with a non-refrigerated structure. The front opening of the storage room 8 is opened and closed by the door bodies 2a and 2b, and the front opening of the room temperature room 9 is opened and closed by the door 2c. An opening 10 as shown in FIG. 6 is provided at approximately the lower center of the rear side of the storage chamber 8, and a wind direction guide 11 covers this. This wind direction guide body 11 has passage dividing plates 12, 12 that divide the opening 10 into three parts in the width direction. The divided openings on both sides communicate with cold air suction ports 13, 13, which are opened at the lower portions of both ends of the wind direction guide 11, respectively. The opening in the divided central portion communicates with a cold air outlet 14 formed of a large number of elongated holes provided along the upper end of the wind direction guide 11 . The cold air suction ports 13, 13 and the openings on both sides, and the cold air outlet 14 and the central opening are partitioned by passage dividing plates 12, 12 so as to form a ventilation path. Further, as shown in FIGS. 4 and 5, the cooling chamber 5 has a cooler 15 and a blower 16 disposed facing each other, and is surrounded by a peripheral wall of the cooling chamber 5 with a gap between them. Passage partition plates 17, 17 are provided. To explain, the cooling chamber 5 is open along the opening 10, and the edges of the passage partition plates 17, 17 are joined to the passage partition plates 12, 12 of the wind direction guide 11. Therefore, when the blower 16 is driven, the cold air at the bottom of both ends of the back side of the storage chamber 8 is sucked into the cold air suction ports 13, 13, which are connected to the passage partition plate 1.
The cold air is guided along the circumference of the cooling chamber 5 from both sides of the opening 10 partitioned by 2 and 12, and is further led from the center of the opening 10 and the cold air outlet 14 via the cooler 15 to the storage chamber 8. A forced circulation air passage 18 leading to the upper part of the air is formed.

A gasket packing 20 as shown in FIG. 7 is attached to the pivot side end surface of the door body 2a. As a result, the mating surfaces of the door bodies 2a and 2b are completely closed, and there is no leakage of cold air. Therefore, the center pillar conventionally provided in the storage room along the mating surface of the door bodies 2a and 2b becomes unnecessary, and the display effect is improved.

Further, as shown in FIG. 3, the refrigerator section 6 includes a compressor 22, a condenser 23, a condenser cooling blower 24, and electrical components 25 arranged on a substrate 21. The compressor 22 and the condenser 23 communicate with the cooler 15 via a refrigerant pipe (not shown) to constitute a refrigeration cycle.

Thus, the cold air in the storage chamber 8 is collected at the lower portions of both ends on the back side thereof, and is led along the forced circulation air passage 18 from the cold air suction ports 13, 13. in the middle,
The temperature of the cold air is lowered through heat exchange with the cooler 15, and the cold air is blown out from the cold air outlet 14 toward the upper part of the storage chamber 8. Since the cold air outlet 14 is provided along the width direction of the back side, the temperature in the upper part of the storage chamber 8 becomes uniform. Moreover, since the cold air in the substantially central part in the width direction of the storage chamber 8 is divided into left and right sides and flows to the cold air suction ports 13, 13, there is no temperature difference in the width direction. Moreover, since the cold air is forced to flow from the upper part to the lower part of the storage chamber 8, there is no temperature difference between the upper and lower parts. As a result, the temperature of the storage chamber 8 becomes uniform in all parts.

Note that the shape and structure of the wind direction guide body 11 in the above embodiment is not limited. The point is that it is sufficient if the cold air can be forcedly circulated and guided along a predetermined direction.

[Effect of idea]

As explained above, according to the present invention, the cold air sucked in from the lower part of both ends of one side of the storage chamber is exchanged with the cooler, and is blown out from the upper part of one side of the storage chamber in the width direction. Regardless of the location of the blower and the size of the blade diameter,
This has the effect of preventing local temperature differences in the storage room and improving cooling efficiency.

[Brief explanation of the drawing]

Fig. 1 is a schematic longitudinal sectional view of a refrigerator showing a conventional example of the present invention, Fig. 2 is a perspective view of a refrigerator showing an embodiment of the invention, Fig. 3 is a perspective view of a refrigeration unit, and Fig. 4 is a perspective view of a refrigerator showing an embodiment of the present invention. FIG. 5 is a schematic cross-sectional view thereof, FIG. 6 is a perspective view of the main part, and FIG. 7 is a cross-sectional plan view of the main part. 1...Refrigerator body, 8...Storage room, 15...Cooler, 24...Blower, 5...Cooling room, 18...
Forced circulation ventilation path, 13...Cold air intake port, 14...
Cold air outlet.

Claims (1)

[Scope of utility model registration request] A refrigerator main body, a storage chamber provided in the refrigerator main body and having a door body pivotally attached to a front opening, and a cooling chamber protruding from the substantially central lower part of the back side of the storage chamber and accommodating a cooler and a blower. A forced circulation ventilation path is provided, which sucks cold air from the lower portions of both ends of the rear surface of the storage chamber, guides it to the cooling chamber, and blows out the cold air that has undergone heat exchange in the cooling chamber from the upper portion along the width direction of the rear surface of the storage chamber. A refrigerator featuring